fathomable vs plumbable

fathomable and plumbable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
fathomable	No	Yes	No	No
plumbable	No	Yes	No	No

As adjectives, fathomable and plumbable are synonyms defined as:

fathomable and plumbable: (of depth) capable of being sounded or measured for depth

Other synonyms of fathomable include soundable.

fathomable (adjective)	plumbable (adjective)
(of depth) capable of being sounded or measured for depth	(of depth) capable of being sounded or measured for depth
(of meaning) capable of being penetrated or comprehended